Controlling group and phase velocities in bidirectional mode-locked fiber lasers

A bidirectional mode-locked fiber laser producing two correlated frequency combs of the same repetition rate is demonstrated. The intensity dependence of pulse and phase velocities are measured simultaneously. As expected, the phase delay is determined by the linear and nonlinear indices of refracti...

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Veröffentlicht in:Optics letters 2019-06, Vol.44 (11), p.2903
Hauptverfasser: Afkhamiardakani, Hanieh, Diels, Jean-Claude
Format: Artikel
Sprache:eng
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Zusammenfassung:A bidirectional mode-locked fiber laser producing two correlated frequency combs of the same repetition rate is demonstrated. The intensity dependence of pulse and phase velocities are measured simultaneously. As expected, the phase delay is determined by the linear and nonlinear indices of refraction. The nonlinear Kerr effect contribution to the pulse velocity is dwarfed by a contribution from saturable gain dynamics.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.002903